Docker RUN with multiple commands and if conditions

Question

I do not have much knowledge on docker file. Please help me with below requirement.

I am looking for a docker RUN command as below:

RUN set -ex && \
    yum install -y tar gzip && \
    <Other set of commands which includes mkdir, curl, tar>
    rm -vr properties  && \
    if [${arg} == "prod"] then  rm -v conf/args.properties fi

This is not working and getting error syntax error: unexpected end of file

Something you could try is to have your commands on a separate script file and the run that from your dockerfile. I think that'd make more manageable, IMO. That said, you'd loose having it all in the dockerfile — jarz
– jarz, Commented Nov 17, 2020 at 6:28
Thank u for your reply. I am wondering what is the wrong in this syntax or how to write this..? — Jyo
– Jyo, Commented Nov 17, 2020 at 6:46

Spirit · Accepted Answer · 2020-11-17 07:05:15Z

7

It seems to me, that you have missed one or two ;

If statements in shell need to have a ; after the condition if the then is in the same line.

I have added a second ; after the rm statement before fi.

Your code should look like

RUN set -ex && \
    yum install -y tar gzip && \
    <Other set of commands which includes mkdir, curl, tar>
    rm -vr properties  && \
    if [ ${arg} == "prod" ]; then  rm -v conf/args.properties; fi

answered Nov 17, 2020 at 7:05

Spirit

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